(08-26) 14:44 PDT NAPA -- Class will be back in session Wednesday in all but one Napa school following Sunday's 6.0-magnitude earthquake, officials said.

All 30 of the Napa Unified School District's properties passed inspection and were deemed safe after the district told students to stay home Monday and Tuesday so buildings could be surveyed, said district superintendant Patrick Sweeney.

"It has been a busy week and it's only Tuesday," he said at a press conference Tuesday afternoon. "All of our schools have been inspected by architects and engineers. There is no structural damage and our schools are safe for students and staff."

One school, Stone Bridge Charter School, located southwest of the city of Napa closer to the epicenter of the quake, will be closed until next week. There, inspectors found cracks in the floors and the walls and decided to keep the roughly 180 kindergarten through 8th-grade students home until next week as a precautionary measure.

For students returning to the classroom Wednesday, one of the first things on the schedule will be going through earthquake drills, Sweeney said, practicing both taking cover and evacuating just in case of strong aftershocks.

Students will also have to contend with piles of trash that residents have been dumping in school parking lots, as directed by the city.

Small mountains of broken electronics, construction debris and busted furniture littered the parking lot in front of Napa High School on Tuesday afternoon, but Sweeney said the city was doing its best to clean up the lots before the start of the school day Wednesday.